Flood Threat Continues to Rise in Texas, Oklahoma

Rain is about to mess with Texas in a big way. And though they may be football rivals, Oklahoma is also in for a wallop, as large portions of both states are under flash flood watches and warnings through Saturday.

A trifecta of factors are coming together that could dump nearly a foot of rain across the region in the next 96 hours. An upper low coming from the Southwest will get a double dose of tropical moisture from both the Gulf of Mexico and the Pacific. The latter will come courtesy of the remnants of Hurricane Patricia, which is expected to make landfall in Mexico late Friday night.

The beginnings of the heavy rain are already working across the Oklahoma’s Panhandle and West Texas. Totals ranging from 3 to 7 inches have already fallen there. But when all's said and done, east and central Texas could pick up the lion’s share of rain, with up to 11 inches possible. The state average for rain through this weekend is 3.6 inches, which would be roughly the equivalent of more than 17 trillion gallons of water falling on Texas.

Heavy downpours are on the rise across the U.S. Texas has seen an 8 percent increase in the number of heavy downpours — defined as the top 1 percent of heaviest rainfall events — since 1950. This heavy rain come on the heels of a four-month string of very dry months for Texas and the Southern Plains at large.

“It has been an all-or-nothing year for the South Central U.S.,” Brad Rippey, a meteorologist with the U.S. Department of Agriculture, said.

Rippey wrote the text accompanying the weekly U.S. Drought Monitor update released on Thursday, a report that’s going to quickly be irrelevant. Texas and large parts of the Southern Plains have dealt with severe drought for as long as five years. After a late May and early June soaking, drought disappeared only to come back with a vengeance this summer.

“From southern Oklahoma and central and eastern Texas to the Mississippi Delta, the four-month period from mid-June to mid-October featured huge precipitation deficits that have caused all of the troubles that I wrote about in this week’s U.S. Drought Monitor text,” Rippey said. “But now, we have relief — but in the end it will be too much for some areas.”

A flash flood watch is in place for a 550-mile stretch from the Texas-Mexico border to metropolitan areas including Dallas and Oklahoma City through Saturday. Flash flood warnings are also in place in parts of central Texas through this afternoon.

The tropical roots of the rainfall may extend beyond Patricia. During El Niño years, the southern tier of the U.S. tends to be wetter than normal.

The seemingly endless and often torrential rains that deluged Texas and Oklahoma in May are in some ways a harbinger of what the South Central states can expect to see as the world warms. But the region also could be in store for just the opposite – more long bouts of hot, dry days that could cause the Southern Plains to be even more susceptible to

While the Western drought has its claws firmly dug in, the nearly five-year drought that has gripped Oklahoma and Texas is on its last legs, thanks to recent torrents of rain, government climate scientists said Thursday. “I think the Texas drought is pretty much all but over,” Victor Murphy, climate services program manager for the National Weather

While tornadoes normally take center stage during severe weather season, for Oklahoma City on Wednesday, it was torrential rains and flash flooding that overshadowed the twisters. The city recorded more than 7 inches of rain in 24 hours, the third-highest single day rainfall total for any day since record-keeping began in 1891. The deluge caused

Record-breaking rain across Texas and Oklahoma this week caused widespread flooding, the likes of which the region has rarely, if ever, seen. For seven locations there, May 2015 has seen the most rain of any month ever recorded, with five days to go and the rain still coming. While rainfall in the region is consistent with the emerging El Niño, the